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Electric Traction

Electric Traction
If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails?

0.16
0.26
0.46
0.35

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Electric Traction
The wheels of a train, engine as well as bogies, are slightly tapered to

Facilitate in taking turns
Increase friction
Reduce friction
Facilitate braking

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Electric Traction
Battery operated trucks are used in

Narrow gauge traction
Factories for material transportation
Power stations
Steel mills

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Electric Traction
Suri transmission is

Hydro pneumatic
Electrical pneumatic
Hydro mechanical
Mechanical electrical

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Electric Traction
The voltage used for suburban trains in D.C. system is usually

24 V
600 to 750 V
220 V
12 V

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Electric Traction
Power for lighting in passenger coach, in a long distance electric train, is provided

Through rails
Through individual generator of bogie and batteries
Directly through overhead electric line
Through locomotive

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